<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */
/**
 * Smarty {html_options} function plugin
 *
 * Type:     function<br>
 * Name:     html_options<br>
 * Input:<br>
 * - name       (optional) - string default "select"
 * - values     (required if no options supplied) - array
 * - options    (required if no values supplied) - associative array
 * - selected   (optional) - string default not set
 * - output     (required if not options supplied) - array
 * Purpose:  Prints the list of <option> tags generated from
 * the passed parameters
 * @link http://smarty.php.net/manual/en/language.function.html.options.php {html_image}
 * (Smarty online manual)
 * @author Monte Ohrt <monte at ohrt dot com>
 * @param array
 * @param Smarty
 * @return string
 * @uses smarty_function_escape_special_chars()
 */
function smarty_function_html_options ($params, &$smarty)
{
    require_once $smarty->_get_plugin_filepath('shared', 'escape_special_chars');
    $name = null;
    $values = null;
    $options = null;
    $selected = array();
    $output = null;
    $extra = '';
    foreach ($params as $_key => $_val) {
        switch ($_key) {
            case 'name':
                $$_key = (string) $_val;
                break;
            case 'options':
                $$_key = (array) $_val;
                break;
            case 'values':
            case 'output':
                $$_key = array_values((array) $_val);
                break;
            case 'selected':
                $$_key = array_map('strval', array_values((array) $_val));
                break;
            default:
                if (! is_array($_val)) {
                    $extra .= ' ' . $_key . '="' .
                     smarty_function_escape_special_chars($_val) . '"';
                } else {
                    $smarty->trigger_error(
                    "html_options: extra attribute '$_key' cannot be an array", 
                    E_USER_NOTICE);
                }
                break;
        }
    }
    if (! isset($options) && ! isset($values))
        return ''; /* raise error here? */
    $_html_result = '';
    if (isset($options)) {
        foreach ($options as $_key => $_val)
            $_html_result .= smarty_function_html_options_optoutput($_key, 
            $_val, $selected);
    } else {
        foreach ($values as $_i => $_key) {
            $_val = isset($output[$_i]) ? $output[$_i] : '';
            $_html_result .= smarty_function_html_options_optoutput($_key, 
            $_val, $selected);
        }
    }
    if (! empty($name)) {
        $_html_result = '<select name="' . $name . '"' . $extra . '>' . "\n" .
         $_html_result . '</select>' . "\n";
    }
    return $_html_result;
}
function smarty_function_html_options_optoutput ($key, $value, $selected)
{
    if (! is_array($value)) {
        $_html_result = '<option label="' .
         smarty_function_escape_special_chars($value) . '" value="' .
         smarty_function_escape_special_chars($key) . '"';
        if (in_array((string) $key, $selected))
            $_html_result .= ' selected="selected"';
        $_html_result .= '>' . smarty_function_escape_special_chars($value) .
         '</option>' . "\n";
    } else {
        $_html_result = smarty_function_html_options_optgroup($key, $value, 
        $selected);
    }
    return $_html_result;
}
function smarty_function_html_options_optgroup ($key, $values, $selected)
{
    $optgroup_html = '<optgroup label="' .
     smarty_function_escape_special_chars($key) . '">' . "\n";
    foreach ($values as $key => $value) {
        $optgroup_html .= smarty_function_html_options_optoutput($key, $value, 
        $selected);
    }
    $optgroup_html .= "</optgroup>\n";
    return $optgroup_html;
}
/* vim: set expandtab: */
?>
